As a small town family physician, I have documented "hot spots" around the area for several environmental cancers. The CDC is too busy with that butt-fupping illness to bother with my data. We have been drinking water from N. Wisconsin for 15 years, FYI
I understand your concern for "hot spots" and possible environmental cancers. My brother told me that folks in his western Kentucky hometown were dropping like flies from cancer. A bit later the EPA came in and closed down the city's water system until corrective actions were taken. I presume the city complied. I still take bottled water when I visit him.